Improvement in millstone-exhausts



2 sheets-ngen '1.

V'1).BRUBAKER. Millstone Exhaust.

Patented Jan. 29,1878.

m 4n M. @w Hw C Y M N.FETERS. PHOTO-LITHUGRAFHEH. WASHINGTON. D. C4

V 2 Sheets-Sheet 2. D. BRBAKE'R. Millstone Exhaust.

10.199,688. 'm Patented 1an. 29,1878.

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ummm z N. PETERS, PHOTO-LITHOGRAPHER, WASHINGTON. n CX UNITED STATES PATENT OEEIGE DANIEL BRUBAKER, OF MANSFIELD, OHIO.

IMPROVEMENT IN M l LLSTONE-EXHAUSTS.

vSpecification forming part of Letters Patent No. 199,688, dated January 29, 1878; application filed December 12, 1877. i

To all whom it may concern:

Be it known that I, DANIEL BRUBAKER, of Mansfield, in the county of Richland and State of Ohio, have invented certain new and useful Improvements in Hot-Air Condensers and I do hereby declare that the following is a full,

clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specifica-4 construction and combination of parts, as will be hereinafter more fully set forth. Y

In the annexed drawings, to which refer` ence ismade, and which fully illustrate my invention, Figure 1 is a longitudinal vertical section of my invention, and Fig. 2 is a transverse vertical section of the same.

B represents the millstone, with casing A and flour-discharge spout C. l? is the cold-air inlet between the outer case A and the millstone B. The discharge-spout C leads to the conveyer K, 'which is arranged in an airtight compartment, L, and om the same extends an air-tube, D, to the bottom of the airregulating chest E. From the top of this chest extends a suction-tube, F, to the suction-fan H. In the chest E is a series of regu-4 lating-slides, J, and in the suction-tube F is a cut-off slide, G. I is the discharge-tube, and M the elevator.

When the millstones are grinding, the fan H is run at a sufficient velocity to cause a suction of cold air around the inner side of the caseA and outer circumference of the millstone B. The cold air passes into the case A,

around the opening on the upper side of the stone B, and under the projection of the case, which cold air comes into contact with the hot air caused by the friction of the millstone when grinding, thereby condensing the hot air into cold air. rIhe air passing with the chop down the delivery-spout C into the conveyer-case, the chop is conveyed to the elevator M, and then carried to the bolts. The air leaves the chop in the conveyer case, and passes up the Vtube D into the regulating-chest E. The dust or lour which is carried with the air into this chest is there separated from the air by the slides J, which cause the air to form an eddy at the end of each slide. slides J are arranged alternately from opposite ends' of the chest, as shown in Fig. 2. From the chest E the air passes through the tube F into the fan H, and from thence into the discharge-tube I, Vand into the open air.

The flour separated from the air when passing through the air-regulating chest E is returned to the conveyer K by closing the slide G, which cuts off the suction from the chest, and then, by removing the slidesJ, the lour falls back into the conveyer.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The fan H andtubes F, I, and D, in combination with the air-regulating chest E, air tight conveyer-case L, conveyer K, and de livery-spout C, constructed and arranged for the purpose specified.

2. The regulating-chest E, with the adjustable slides J, in combination with the cold-air inlet P, tubes D, F, and I, and fan H, constructed and arranged for the purpose set forth.

ln testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses. V

DANIEL BEUEAKEE.

Witnesses:

H'. B. DIELAM, STEPHEN B. PRIEST.

The 

